let data = {
  labels: ["Symbian", "Blackberry", "Other", "Android", "IOS"],
  datasets: [{
    data: [15, 20, 30, 10, 30],
    backgroundColor: ["#BDC3C7", "#9B59B6", "#E74C3C", "#26B99A", "#3498DB"],
    hoverBackgroundColor: ["#CFD4D8", "#B370CF", "#E95E4F", "#36CAAB", "#49A9EA"]
  }]
}